big kill patch (adds list/help/version)
Joshua Daniel Franklin
Sun Mar 10 18:54:00 GMT 2002
As a result of the 'kill -sigN' functionality, kill does not use
GNU getopt to process options, so this patch required quite a few
changes. While ./kill.exe works the same as /bin/kill for me, as
usual I'm not saying it has any MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. Send me test cases and I will test if you desire.
I also made two "unecessary" changes, which I like to think of as
improvements. First, I removed the goto statement and moved the
code into a new function called sig0 (the label from the goto). This
and all the other functions now appear above main (). I thought a
goto was absolutely necessary (even though I haven't needed one since
VAX assembly), until I read:
Edsger W. Dijkstra "Go To Statement Considered Harmful"
No code was harmed in this move. In fact, being lazy I left all the
variable names the same.
Second, there is now a -l, --list option that will list signal numbers
and a *description* of the signal such as:
24: CPU time limit exceeded
I would like to add the symbolic names like XCPU, HUP, etc. to the list
option, but I don't know of a dynamic way to do so. Is there something like
strsignal for this, or would it have to be hard-coded?
2002-03-10 Joshua Daniel Franklin <email@example.com>
* kill.cc (sig0) New function. Process signals given on command line.
(usage) Generalize to allow use for help. Describe options.
(list_signals) New fucntion.
(print_version) New function.
(main) Accomodate new options. Add long options for each.
Move goto functionality to sig0.
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